Software buying calculators for a clearer approval case.
Use this path when a quote looks promising but the business case still needs numbers: total cost, expected benefit, adoption risk, payback, and the next question an approver is likely to ask.
Capture the cost
Start with license/subscription, implementation, training, support, and internal admin time.
Estimate the benefit
Use hours saved, avoided risk, margin-adjusted revenue lift, or another value you can defend.
Stress-test adoption
Reduce the benefit if rollout risk, behavior change, or data quality could lower the result.
Check payback
Compare first-year net benefit and payback timing before asking for budget.
Software Buying Planner
Start here when you need a practical approval memo with adoption confidence, scenarios, payback, and first-year net benefit.
SaaS ROI Calculator
Use for a faster ROI, net benefit, and payback check from subscription cost, time savings, and revenue lift.
Software ROI & TCO Calculator
Use when implementation, support, training, admin time, and total cost of ownership matter.
Payback Period Calculator
Use when the main question is how long it takes for the spend to break even.
CAC Payback Period Calculator
Use when the software mainly affects sales, marketing, acquisition cost, or MRR economics.
Choose the calculator by the approval question.
Start with the narrowest tool that answers the decision, then graduate to the planner when you need a copyable approval packet or a reviewer-ready downside case.
| Approval question | Use this calculator | Decision output | Next check |
|---|---|---|---|
| Need the fastest go/no-go readout? | SaaS ROI Calculator | ROI, net benefit, payback, adoption-confidence scenarios, and a short decision memo. | If implementation, training, or support costs are material, move to Software ROI & TCO before approving. |
| Comparing a quote with hidden rollout costs? | Software ROI & TCO Calculator | Total cost of ownership across license, implementation, support, admin time, training, and benefit. | Ask the vendor for one-time fees, internal admin load, renewal terms, and support assumptions. |
| Writing an approval note for a human? | Software Buying Planner | Approval-ready packet with adoption risk, scenarios, payback, and first-year net benefit. | Copy the memo only after the base case and downside case both use defensible assumptions. |
| Only timing matters? | Payback Period Calculator | Simple and discounted payback timing for the spend. | Pair it with ROI or TCO if benefits continue after the payback point. |
Approval-ready checklist
Before a software result becomes an internal recommendation, make sure the assumptions are reviewable and the next action is explicit.
- Does the result use gross-margin or labor-value assumptions instead of raw revenue hype?
- Is the adoption-confidence haircut visible enough for a reviewer to challenge it?
- Are one-time setup, data migration, training, support, renewal, and admin costs included?
- Can someone explain the downside case without reopening a spreadsheet?
- Is there a clear next action: approve, negotiate, pilot, delay, or reject?
This collection page does not ask for inputs. Calculator pages run in the browser and should not put raw inputs or results in URLs.